﻿<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>视频作为纹理贴图</title>
    <script src="../../js/three.js"></script>
    <script src="../../js/controls/OrbitControls.js"></script>
    <style type="text/css">
        body {
            margin: 0;
            overflow: hidden;
            height: 100vh;
            width: 100%;
        }
    </style>
</head>

<body>
    <script type="text/javascript">
        /**
         * 创建场景对象Scene
         */
        var scene = new THREE.Scene()
        // var sWidth = document.body.scrollWidth
        // var sHeight = document.body.scrollHeight
        // console.log(sWidth, sHeight)
        // var geometry = new THREE.PlaneGeometry(108, 71); //矩形平面
        var geometry = new THREE.BoxGeometry(100, 250, 150)
        // 创建video对象
        let video = document.createElement('video');
        video.src = "./assets/video/1086x716.mp4"; // 设置视频地址
        video.autoplay = "autoplay"; //要设置播放
        // video对象作为VideoTexture参数创建纹理对象
        var texture = new THREE.VideoTexture(video)
        texture.minFilter = THREE.LinearFilter;
        texture.magFilter = THREE.LinearFilter;
        texture.format = THREE.RGBFormat;
        // texture.minFilter = THREE.NearestFilter
        var material = new THREE.MeshPhongMaterial({
            map: texture, // 设置纹理贴图
        }); //材质对象Material
        var mesh = new THREE.Mesh(geometry, material); //网格模型对象Mesh
        scene.add(mesh); //网格模型添加到场景中
        /**
         * 光源设置
         */
        //点光源
        var point = new THREE.PointLight(0xffffff);
        point.position.set(400, 200, 300); //点光源位置
        scene.add(point); //点光源添加到场景中
        //环境光
        var ambient = new THREE.AmbientLight(0xaaaaaa);
        scene.add(ambient);
        /**
         * 相机设置
         */
        var width = window.innerWidth; //窗口宽度
        var height = window.innerHeight; //窗口高度
        var k = width / height; //窗口宽高比
        var s = 150; //三维场景显示范围控制系数，系数越大，显示的范围越大
        //创建相机对象
        var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
        camera.position.set(200, 300, 200); //设置相机位置
        camera.lookAt(scene.position); //设置相机方向(指向的场景对象)
        /**
         * 创建渲染器对象
         */
        var renderer = new THREE.WebGLRenderer();
        renderer.setSize(width, height); //设置渲染区域尺寸
        renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色
        document.body.appendChild(renderer.domElement); //body元素中插入canvas对象

        // 渲染函数
        function render() {
            renderer.render(scene, camera); //执行渲染操作
            requestAnimationFrame(render);
        }
        render();
        //创建控件对象  相机对象camera作为参数   控件可以监听鼠标的变化，改变相机对象的属性
        var controls = new THREE.OrbitControls(camera, renderer.domElement);
        //监听鼠标事件，触发渲染函数，更新canvas画布渲染效果
        controls.addEventListener('change', render);
    </script>
</body>

</html>